文件操作
上传文件
适用于:Chatflow、Workflow、新 Agent、聊天助手、Agent、文本生成应用。
上传文件用于发送消息时使用,支持图片、文档、音频和视频的多模态理解。上传的文件仅供当前终端用户使用。
POST
/
files
/
upload
上传文件
curl --request POST \
--url https://{api_base_url}/files/upload \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: multipart/form-data' \
--form file='@example-file' \
--form 'user=<string>'import requests
url = "https://{api_base_url}/files/upload"
files = { "file": ("example-file", open("example-file", "rb")) }
payload = { "user": "<string>" }
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, data=payload, files=files, headers=headers)
print(response.text)const form = new FormData();
form.append('file', '<string>');
form.append('user', '<string>');
const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
options.body = form;
fetch('https://{api_base_url}/files/upload', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://{api_base_url}/files/upload",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"user\"\r\n\r\n<string>\r\n-----011000010111000001101001--",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: multipart/form-data"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://{api_base_url}/files/upload"
payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"user\"\r\n\r\n<string>\r\n-----011000010111000001101001--")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://{api_base_url}/files/upload")
.header("Authorization", "Bearer <token>")
.body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"user\"\r\n\r\n<string>\r\n-----011000010111000001101001--")
.asString();require 'uri'
require 'net/http'
url = URI("https://{api_base_url}/files/upload")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"user\"\r\n\r\n<string>\r\n-----011000010111000001101001--"
response = http.request(request)
puts response.read_body{
"id": "a1b2c3d4-5678-90ab-cdef-1234567890ab",
"name": "product-photo.png",
"size": 204800,
"extension": "png",
"mime_type": "image/png",
"created_by": "f1e2d3c4-b5a6-7890-abcd-ef1234567890",
"created_at": 1705407629,
"preview_url": null,
"source_url": "https://upload.dify.ai/files/a1b2c3d4-5678-90ab-cdef-1234567890ab/file-preview?timestamp=1705407629&nonce=8b3e26a5&sign=rN5DXW3xkVGwGE5MSvptu_BhQVXpMbXWmVJ0ib0LMzI=",
"original_url": null,
"user_id": null,
"tenant_id": "11223344-5566-7788-99aa-bbccddeeff00",
"conversation_id": null,
"file_key": null
}Authorizations
API Key 认证。对于所有 API 请求,请在 Authorization HTTP 头中包含您的 API Key,并加上 Bearer 前缀。示例:Authorization: Bearer {API_KEY}。强烈建议将 API Key 存储在服务端,不要在客户端共享或存储,以避免 API Key 泄漏导致严重后果。缺少或无效的 API Key 会返回 HTTP 401,错误码为 unauthorized。
Body
multipart/form-data
文件上传请求。需要 multipart/form-data 格式。
Response
文件上传成功。
唯一文件 ID。
文件名。
文件大小(字节)。
文件扩展名。
文件的 MIME 类型。
上传文件的用户 ID。
上传时间戳(Unix 纪元秒)。
文件的预览 URL。
文件的签名下载 URL。
文件的原始 URL。
未使用,始终为 null。
关联的租户 ID。
关联的会话 ID。
未使用,始终为 null。
Last modified on July 9, 2026
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上传文件
curl --request POST \
--url https://{api_base_url}/files/upload \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: multipart/form-data' \
--form file='@example-file' \
--form 'user=<string>'import requests
url = "https://{api_base_url}/files/upload"
files = { "file": ("example-file", open("example-file", "rb")) }
payload = { "user": "<string>" }
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, data=payload, files=files, headers=headers)
print(response.text)const form = new FormData();
form.append('file', '<string>');
form.append('user', '<string>');
const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
options.body = form;
fetch('https://{api_base_url}/files/upload', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://{api_base_url}/files/upload",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"user\"\r\n\r\n<string>\r\n-----011000010111000001101001--",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: multipart/form-data"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://{api_base_url}/files/upload"
payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"user\"\r\n\r\n<string>\r\n-----011000010111000001101001--")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://{api_base_url}/files/upload")
.header("Authorization", "Bearer <token>")
.body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"user\"\r\n\r\n<string>\r\n-----011000010111000001101001--")
.asString();require 'uri'
require 'net/http'
url = URI("https://{api_base_url}/files/upload")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n<string>\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"user\"\r\n\r\n<string>\r\n-----011000010111000001101001--"
response = http.request(request)
puts response.read_body{
"id": "a1b2c3d4-5678-90ab-cdef-1234567890ab",
"name": "product-photo.png",
"size": 204800,
"extension": "png",
"mime_type": "image/png",
"created_by": "f1e2d3c4-b5a6-7890-abcd-ef1234567890",
"created_at": 1705407629,
"preview_url": null,
"source_url": "https://upload.dify.ai/files/a1b2c3d4-5678-90ab-cdef-1234567890ab/file-preview?timestamp=1705407629&nonce=8b3e26a5&sign=rN5DXW3xkVGwGE5MSvptu_BhQVXpMbXWmVJ0ib0LMzI=",
"original_url": null,
"user_id": null,
"tenant_id": "11223344-5566-7788-99aa-bbccddeeff00",
"conversation_id": null,
"file_key": null
}